/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2011 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 * OpenSceneGraph Public License for more details.
*/

#ifndef BASEDRAGGER_H
#define BASEDRAGGER_H

#include <osgManipulator/Translate1DDragger>
#include <osgManipulator/Translate2DDragger>
#include <osgManipulator/RotateCylinderDragger>
#include <osgManipulator/RotateSphereDragger>
#include <osgManipulator/Scale1DDragger>
#include <osg/Node>


//#define OSGDRAGGER_DYNAMIC
//#include "Exports.h"

namespace osgDragger
{

//pointDragger

void setMaterialColorExtend(const osg::Vec4& color, osg::Node& node);

class PointDragger : public osgManipulator::Dragger
{
public:
	PointDragger();

	META_OSGMANIPULATOR_Object(osgDragger, PointDragger);

	//操作器响应函数，在Translate1DDragger下的handle()中响应，用来分发Command
	virtual void dispatch(osgManipulator::MotionCommand& command);

	/** Handle pick events on dragger and generate TranslateInLine commands. */
	virtual bool handle(const osgManipulator::PointerInfo& pi, const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& us);

	/** Set/Get color for dragger. */
	inline void setColor(const osg::Vec4& color) { _color = color; setMaterialColor(_color,*this); }
	inline const osg::Vec4& getColor() const { return _color; }

	/** Set/Get pick color for dragger. Pick color is color of the dragger when picked.
	It gives a visual feedback to show that the dragger has been picked. */
	inline void setPickColor(const osg::Vec4& color) { _pickColor = color; }
	inline const osg::Vec4& getPickColor() const { return _pickColor; }

protected:
	virtual ~PointDragger() {}

	osg::Vec3 _startPickedPt;

	osg::Vec4 _color;
	osg::Vec4 _pickColor;
};

class  Move1DDragger : public osgManipulator::Translate1DDragger
{
public:
	Move1DDragger();
	Move1DDragger(const osg::Vec3d& s, const osg::Vec3d& e);

	META_OSGMANIPULATOR_Object(osgDragger,Move1DDragger);

	//操作器响应函数，在Translate1DDragger下的handle()中响应，用来分发Command
	virtual void dispatch(osgManipulator::MotionCommand& command);

	/** Handle pick events on dragger and generate TranslateInLine commands. */
	virtual bool handle(const osgManipulator::PointerInfo& pi, const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& us);

	void SetStepLenght(double step){ _translationStep = step;}
private:
	double _translationStep;
};

class  Move2DDragger : public osgManipulator::Translate2DDragger
{
public:
	Move2DDragger();
	Move2DDragger(const osg::Plane& plane);

	META_OSGMANIPULATOR_Object(osgDragger,Move2DDragger);

	virtual void dispatch(osgManipulator::MotionCommand& command);

};

class  CylinderDragger : public osgManipulator::RotateCylinderDragger
{
public:
	CylinderDragger();

	META_OSGMANIPULATOR_Object(osgDragger,CylinderDragger);

	void SetStepLenght(double step){ _rotateStep = step;}
protected:
	virtual bool handle(const osgManipulator::PointerInfo& pointer, const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa) override;

	virtual void dispatch(osgManipulator::MotionCommand& command);

	double _rotateStep;
};

class  SphereDragger : public osgManipulator::RotateSphereDragger
{
public:
	SphereDragger();

	META_OSGMANIPULATOR_Object(osgDragger,SphereDragger);

	virtual void dispatch(osgManipulator::MotionCommand& command);
};


class  BaseDragger : public osgManipulator::CompositeDragger
{
public:
		
	META_OSGMANIPULATOR_Object(osgDragger,BaseDragger)

	virtual bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);

	virtual bool handle(const osgManipulator::PointerInfo& pi, const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);

	virtual void handlePushMessage(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa){};

	virtual void handleDragMessage(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa){};

	virtual void handleReleaseMessage(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);

	void setIntersectionCamera(osg::Camera* camera);

protected:
	BaseDragger();
	virtual ~BaseDragger();
		
	osg::observer_ptr<osg::Camera> _intersectionCamera;
};

}	  //end namespace

#endif // BASEDRAGGER_H